A nurse is caring for a client who has atypical depression and is taking phenelzine. Which of the following foods is appropriate for the nurse to offer as an evening snack?

Choice A reason: Tachycardia is a classic sign of dehydration. When fluid volume decreases, cardiac output drops, and the body compensates by increasing heart rate to maintain perfusion. This makes tachycardia a reliable indicator of dehydration in a client with prolonged vomiting.

Choice B reason: A urine output of 850 mL per day is within normal limits (normal adult urine output is 800–2000 mL/day). Dehydration would typically present with oliguria, defined as less than 400 mL/day. Therefore, this finding does not indicate dehydration.

Choice C reason: A serum sodium level of 130 mEq/L indicates hyponatremia, which can occur with excessive vomiting and fluid loss. However, hyponatremia is not a direct indicator of dehydration; it reflects electrolyte imbalance. Dehydration is more directly identified by clinical signs such as tachycardia, hypotension, and dry mucous membranes.

Choice D reason: Distended neck veins suggest fluid overload, not dehydration. In dehydration, neck veins are typically flat or collapsed due to reduced circulating volume. This finding is inconsistent with dehydration.

Choice A reason: Confusion upon waking is a common and expected side effect of electroconvulsive therapy (ECT). Clients often experience transient disorientation, memory impairment, or headache immediately after the procedure. This occurs because ECT induces a controlled seizure, which temporarily alters brain activity. Nurses must prepare clients for these short-term cognitive effects and reassure them that confusion typically resolves within hours.

Choice B reason: Lorazepam is not administered before ECT because benzodiazepines can raise the seizure threshold and interfere with the therapeutic effect. Instead, clients are given a short-acting anesthetic and a muscle relaxant (commonly methohexital and succinylcholine) to induce unconsciousness and prevent musculoskeletal injury during the seizure. Therefore, this statement is inaccurate.

Choice C reason: ECT does not work by stimulating the vagus nerve. Vagus nerve stimulation (VNS) is a separate treatment modality used for refractory depression and epilepsy. ECT works by inducing a generalized seizure through controlled electrical currents applied to the brain, which alters neurotransmitter activity and improves mood regulation.

Choice D reason: A magnet placed on the scalp is associated with transcranial magnetic stimulation (TMS), not ECT. TMS uses magnetic fields to stimulate specific brain regions without inducing seizures. ECT, in contrast, uses direct electrical currents to trigger a therapeutic seizure. Confusing these modalities can mislead clients, so nurses must clarify the distinction.